System automatic selective telephony



June 8 1926."

R. C. M. HASTINGS SYSTEM AUTOMATIC SELECTIVE TELEPHONY Original Filed May 24, 1919 11 Sheets-Sheet .1

June 8 1926.

R. C. M. HASTINGS SYSTEM AUTOMATIC SELECTIVE TELEPHONY Original File? lay 2 1919 11 Sheets-Sheet 2 J ne 8,1926,

R. CQMHASTINGS SYSTEM AUTOMATIC SELECTIVE T QLEPHONY OriginaliFiletl May 24, 1919 '11 Sheets-Sheet. 3

' I Jazz/d0)" Jtibr' y June 8 1926. .R.' c. M. HASTINGS SYSTEM AUTOMATIC SELECTIVE TELEPHONY Original Filed May 4, 1919 11 Sheet-Sheet 4 R C. M. HASTINGS SYiSTEM AUTOMATIC SELECTIVE TELEPHONY Ju ne 8 1926.

ori inai Filed May 24,, 1919 11 Sheets-Sheet a 1 f2. CM/Yaal'vys R. C. M. HASTINGS SYSTEM AUTOMATIC SELECTIVE TELEPHONY June 8 1926.

Original Filed May 24, 1919 11 Sheets-Sheet, e

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. 1,588,108 R. c. M. HASTINGS SYSTEM AUTOMATIC SELECTIVE TELEPHONY Original Fil y 24, 1919 11 Sheets- Sheet s June 8 1926.

1 1,588,108 R. C. M. HASTINGS SYSTBI AUTOMATIC SELECTIVE TELEPHONY Original Filed y 24. 1919 ll Shets-Sheet 9 Jjlorm y Inventor.

June 8 1926. 1,588,108

. R. C. M. HASTINGS SYSTEM AUTOMATIC SELECTIVE TELEPHONY Original File?! y 1919 11 Sheets-Sheet 10 June 8 1926. 1,588,108 I R. C. M. HASTINGS v SYSTEM AUTOMATIC SELECTIVE TELEPHONY I Original Filed m y 24. 1919 11 Sheets-Sheet 11 1a ,1 417F715. 19] Z Patented June 8, 1926 UNITED STATES P TE T-on on,

RUBEN c. M. HASTINGS, or coLUi/rwsoHIo; ELIZABETH F. HASTINGS ,nxncnritix OF THEv WILLOF SAID R. C. M. HASTINGS, DECEASED.

SYSTEM AUTOMATIC snnnc'rrvn TELEPHONY.

Application filed m 24,, 1919', Serial No. 299,555., ReneweirNbvember 13, 1925.

This invention relates to improvements in a system of automatic selective telephony,

one object of the invention beingthe pro vision of a master selecting key and adjacent matic selective telephony, asset forth in my United States Patents No. 1,061,285 reissued Sept. 28, 1915, No. 13,989,and- No. 1,061,287, simplifying the mechanism and constructlon of the selective key set forth in my United States'Patent No. 1,061,266, and simplifying the exchange switchboard,

A further object of my invention is the provision of a master selecting key which is adapted for use in conjunction with any form of switchboard now in use and which in conjunction with selecting devices as set forth in the above mentioned patents of my own, and particularly thesub-stations, can be used with any number of party line sets, that is, can connect a single line telephone to any one'oi a part line set or any one in one party line set with another one in another partyline set.

A still further object of this invention is; the provision of amaster selecting key and its apparatus, whereby after the insertion of the answering plug and the insertion of the calling plug the simple depression of a key will cause impulses to be transmitted through the line and select any given called:

sub-station, shunting the remaining ones from the line, except the calling sub-station,

and at the same time, isolate the call-up mechanism at the exchange so that the current therefrom cannot possibly interfere with the impulses for operating the step-bystep device in the sub-station.

A still further object of this invention is he provision of mechanism in conjunction with the selector key which restores all mechanisms to normal or zero position at the end of the conversation by a simple removing of the jack plug or the depression of a key, or by the operation of the supervisoryrelaysp H lVith the foregoing and other objects in VlG\V, which will appear as the description proceeds, the inventionresides in the combination and arrangement of parts and in the detailsof construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed Without departing from the spirit of the invention In the accompanying drawings: Figure I is a diagrammatic view of a complete selective telephone system embodying the present invention, one sub-station and the complete exchange being shown, and the partsbeing in normal position.

Figure 2isan enlarged diagrammatic view of the exchange as shown in Figure 1,

heavy lines indicating circuit #1 when one ofthe calling buttons have been depressed. Figure 3 is a view similar to Figure 2, showing in'hea-vy lines circuit #2 upon the release of the previously depressed button,

the magnet releasing circuit for the master selecting key also being shown in heavy lines, as circuit #3. v

Figure 4 is a view similar to Figure 2, showing circuit #4; is heavy lines.

Figure 5 is a view similar: to Figure 2, showing circuit #:5 in heavy lines, circuit #6 also being shown in heavy lines in this view. s

-Figure' 6 is a view similar to Figure 1, in which vthe exchange has a continuously rotating selecting member or barrel".

Figure 7 is a view similar to Figure 2 with the exchange station shown in Figure 6', with its-circuit #1 in full lines.

7 F1gure 8 1s a v ew similar to Figure 6, showing circu t #2 in full lines.

Figure 9 is a View similar to Figure 6,

showing circuit #3 in full lines.

Figure 10 is a view similar to Figure 6,

showing circuits #4 and #5 in full lines.

V Figure 11 is a detail and enlarged view of the rotary barrel or selecting. memb'en Figure 12 is .a section taken on line 1212 of Figure 11.

Figure 13 i of Figure 11. I a

Figure 1e is an end view of the rotary barrel showing the magnet, control lock and release, and means whereby the magnet '16 s a section taken on line I3 1S may be controlled so as to be only momen-' tarily energized when brought into play. a

Figure 15 is a diagrammatic view of a part of a circuit showing the magnet 48 connected in series with magnet 21.

In describing the present invention, the

apparatus as shown in Figures 1 through 5 will bedescribed first. g

Referring particularly to Figure 1, E des- I ignates the exchange, S the sub-station and L the line wires, the answering and calling jacks, J and J being illustrated, while the detail construction of the sub-station S is identical with that set forth in my U. S. Patentllo.1,331,452, dated March 23, 192( Referring particularly to the exchange, there is located the master selecting key K,

' which comprises a rotative barrel 10: having mounted at one end a friction wheel 11 and a freely rotatable spring actuated friction pulley 12, operated by the motor 13. Mounted upon the shaft of thebarrel lO,

is a ratchet wheel 14, provided with a single tooth and disposed to be acted upon by the armature ratchet 15 vwhich normally holds the barrel 10 against rotation so that continued rotation of the motor 13 merely rotates the pulley 12. The magnet 16, as

will presently appear, is disposed to operatethe armature ratchet 15.

This barrel 10 is composed of a body portion having a plurality of cams or steps 17 sozdisposedas to operate and control, as

, ratchet. These switches are opened in succompleted cession, as will presently appear.

By means of the circuits controlled by 7 these switches, the required number of impulses are transmitted to the line due to the two switches 52 and 53, connected to the ringing leads of the ringing keys is so that the impulses are sent through cord circuits to the line. i r

This barrel 1.0 is further provided with a cam 18, so disposed as to operate a noninterfering' circuit through the contact 42 and the relay 24. A further cam 19 is provided and operated by the barrel to cause the contacts 52' and 53 to be opened and closed so that the intermittent impulses are sent out upon the line with reverse polarity, ich is due to the action of relay 28 which is controlled by this cam and its contact n. The very circuits controlling these circuitsare in turn controlled by a series of push buttons (4, 7), 7c. I

fVith easy reach of the operator and are through and are continued through a series of select'ng relays, 28 28.

Where desired and as shown, another circuitpermitting the operator to return the selectedinstruments to Zero or normal position is included in this system, requiring an additional button a with its controlling relay 28 The ei'ierg'ization of any of these relays, 23, 28 or 2 brings about the action of the limiting relay 21 and the cut-oil relay 48, which controls the number t impulses sent out over the line and also the cutting off of selecting key and its control relay 32 may be connected common to an exchange while the buttonand other relays are connected in each operators'position and are common to all of the cords of that position. This is accomplished by branch lines leading from the proper wires as indicated in Figures 1, 2, 3, d and 5. The operation of the present system does not diii'er materially from the general operation of a non-selecting QX- change, except that the operator must press a but-ton a, to start the selecting operation. The present apparatus maybe added to any standard switchboard of the manually operated type without radical changes in the circuits thereof,with the further advantage that with the small number of parts added that require the operators use and attention, consisting of one more butt-on than the maximum selective party line capacity on that position, and two pilot lamps, as will presently appear.

In order that the present system may be fully understood, let us assume that the operator is selecting sub-station No. 1 on the line. The operator will insert the plug P of the cord circuit in the line jack J, as ordinarily. Then the ringing key to that cord circuit is thrown and button a pressed.

Circuit #1 (see Figure 2).The depression of the key a closes the following circuit which includes the battery B, the conductor 20, the impulse relay 21, the conductor 22, the contact or switch 23 of the relay 24:, the conductor 25, the button a, the conductors 26 and 27, the coil or" the selecting relay 28, the conductor29, the contact a of the selecting key K, the barrel 10 of said key, the brush 30, the conductor 31, the clutch magnet relay 32, the conductor 33, the conductor 34 to the battery B. It will thus be seen that this circuitcauses the energization of relays 21, 23 and 32.

Uircm't (see Figure 3).Upon the release of the button a the energization of the relays 21, 28 and 32 are continued through the following circuit which includes the battery B, the conductor 20, the relay 21, the conductor 36, the contact or switch 3? controlled by the coil 28, the same being closed due to the energization by the preceding circuit #1, the conductor 27, the coil 28, the conductor 29, the contact a, the barrel 10 of the selecting key, the brush 30, the conductor 31, the relay 32, the conductor 33, the conductor 34 to the battery.

It will thus be'noted that the energization of the relay 21 cuts the selective circuit across the ringing leads at contacts 61 and Circuit (see Figure 3)".-The ener gization of the relay 32 closesthe following circuit, which includes the battery B, the

conductors 20, 3'7, and 38, the contact or switch 39 of the relay 32, the conductor 40, the clutch controlling relay or magnet 16,

Y 1 and the conductor 41 and 34' to the battery.

By energizing the electro-magnet 16 the armature ratchet is held outwardly and away from the ratchet Wheel 14 until the opening of the circuit #2, which is controlled by contact a and" is held closed until the barrel lO'rotates thru' one complete step at which time the contact a is opened and circuit #3 is also opened so that the elec- V tro-magnet 16' is tie-energized. to" permit the armature ratchet to engage the wheel 14" and halt barrel 10 at the completion of the revolution. a p

Circuit #4 (see- Figure-4)".- -The rotation of the barrelldfirst closes contacts 42' and completes the following circuit, consisting of the battery B, the conductor 43', the coil lock-out noninter'fering' relay 24, the conductor 44, pilot lamp 45','t'he conductor 46, the contact 42, the c0n'ductors'47 and 34 to the battery. The energization of therel'ay 24 causes the opening of the circuit #1 to the button-a atthe contact or switch 23,

thus preventing further selections by any operator until the barrel 10 of the selecting key has completed one revolution and is again halted or at zero position.

Circuit #5 (s'eeFigure 5)'.-This' circuit is controlled by thecontact 42' of the selecting key and closes the cut-cit circuit which is as follows: the battery B,'the conductors 20, 37. and 37, the relay 48, the conductors 49 and 46, the contact 42, the conductor 34 to the battery.

This circuit opens the generator circuit at contacts 50 and 51 of the relay 48, pre- \-'enting the ringing until the selection is perfori'ned and during the rotation of the barrel 10 or until such barrel has completed a single revolution. 1

' Circuit #6 (see-Figure 5).-The remaining contacts orswitches 52 and 53 at the selective key close and immediately thereafter open sending one impulse outon the line through the following circuit, which includes the dynamo D, the conductor 54, the contact 52, the conductors 55 and '56,

the contact or switch 57 of the coil 28 the conductor 58, the pilot lamp" relay 59', the conductor 60, the contact or switch 61 ofthe reiay 21, the conductor 62, the ringing cont acts 63 on the-ringing key K, thence on lay 21, the conductor 67, the contact 68' of the relay 28*, the conductor '69, the Contact dynamo.

At the completion of this contact a the circuit #2 is opened and through'it circuit #3 is also opened. This action causes the de-energization of relays 28, 21, 32 and 16.

The de e'nergization of the relay 21 removes the selective circuit from the ringing leads and prevents further impulses from going out on to the line L. The de-energization of the coil 16, beforestated, releases the armature ratchet 15 so that the barrel 10 is halted at the completion of the revolution and when this occurs the contact 42is opened, causing the de-energization oi relays 48' and 24. p p I Ozrcat #7 (see Figure 4).+ -'The de-energizati'on of the relay 48 connects the generator G to tlie' ringing leads and the circuit is as follows: The generator G, the conductor 70', the contactor switch51"con trolled by the relay 48, the conductors 72 and 65, the ringing contact 63, thence out on the line and return through the cord, of which the operator has the key thrown, to the conductors 62 and 73, the contact 50 of the relay 48, and the conductor 75 to the generator. s v

To restore the elements to normal condition, the operator by touching the. key it closes all of the circuits similar to those controlled by the key a but in addition reverses the polarity of the selecting circuit with respect to the ringing leads at contacts 57 and 68, due to the energization of the relay 28 This action sends ainumber of impulses outon the line as before stated, of reverse polarity to insure the restoring of all sub-stations S to zero position.

.or switch 53, and the conductor '70 to the At the completion of one revolution of i rotates, continuing to be energized until the same stops-thus indicating to the operator that a selection is in progress and that she is to hold downthe desired button until the lamp is extinguished at: the zero position and relighted'by the further rotation of the barrel by the action of pressing.

The impulse pilot lamp "(4 on the switch boardselecting flashes once every impulse sent out upon the line,-'indicating to the op erator the number of impulses being sent to the line and serving as a check on the connection so that the operator will understand whether or not she is in error. This circuit includes the battery 75,'the armature switch 76 controlled by the relay 59, and the lamp74.

If desired, the relay 48 (Fig; 15 may be the button she i8 1 connected in series with therelay coil 21, to

operate only when its switchboard position is in use. By this means it is impossible for i an operator to cut, oil the ringing by an- 25. Thus thelcoils a8 and '28" are simui- V other, operator on boards where the selecting call system'is used by several operators, or

where trnilic is heavy.

It is also possible that the magnet 1 6.

(Fig. maybe so connected to anextra contact on the barrel 10 so as to be cut out of the circuit and de-energized'as soon as the-barrel 10 starts to revolve asthe ratchet wheel i l is provided with one tooth and when released will revolve one rotation in.

' {any event. By this means considerable current maybe saved.

In the arrangement of the apparatus as shown in Figures 6 through 10, the barrel 10 of the key K IS a continuously rotating member and the circuits controlled by the contacts a to j and the buttons a, b,

, etc, are so arranged that the circuits are.

normally open and'no impulses are sent to the line.

taneously energized.

The energization of the coil 48 cuts the ringing and selecting circuits from the ringing leads 62 and 65 at the contact switches 71 and 7e.

Uz'rc mlt it? (see Figure 8) .Upon the release of button is this circuit for energizing the coils 28 and 48 is continued and is as follows: the battery B, the conductor 37, the coil 48, the conductor 86, the coil 28, the conductor 27, the contact 37*, the

conductor 76, the contact or switch 37, and the conductor 77. This continues the en ergization of: the relays i8 and 28.

Circuit #3 (see Figure 9).lVhen the barrel 10 reaches Zeroposition contact of switch 42 is closed completing the following circuit: the battery B, the conductor the impulse relay 21, the conductor -36, the switch 42, the conductor 1 6, the armature switch 7 8, theconductors 79 and 80, coil 28, conductor 29 contact ls barrel 10, brush '30 and the conductor 81. This circuit encrgizes relays 21, 28 and 28.

The energization of the relay 28 opens the circuit 2 at contact 37 releasing relays 28 and 48.

The energization or the relay 21 cuts the selecting circuit across the ringing leads at contacts 61 and 66.

The de-energization ot the relay 4:8 closes the circuit to the ringing leads by permitting the closure of switch 71 and 7 4'.

Oircuz't #4 (see Figure 10) .--Immediately after the contact or switch 42. is closed it reopens and remains open until the barrel 10 is again at zero position, thus circuit #3? is open at contact 42 and is replaced by the following circuit which includes the battery B, the conductor 20, relay 21, conductors 36 and SI, relay switch 82, conductor 80, 0011 28, conductor 29, contact 70, barrel l0, brush and conductor 31;

This circuit continues the energization of V the relays 21and 28 until the circuit is and reopen, sending out impulses on the line through the following circuit, which includes battery Bi'conductor 54L, contact 52, conductor 55, conductor 56, armature contact 57, conductor 58", pilot relay 59, conductor 60", contact 61, conductor 73, contact, 74, conductor 62,r1nging contact 63, thence out on the line and return through the cord'of which the operator has thrown the key,con'- ductor 65 contact 71 conductor 72, contact of coil 21, conductor 67, contact 68 of relay 28, conductor conductor 70. V v 7 At the end of the series of impulses sent out on the line, the contact 10 opens and causes the de-energization of the relays 28 and 21. Circuit #6 (see Figure 8).The de-energiza-tion of the. coil 21 disconnects the selecting circuit atcontacts 61 and 66 and connects the generator G to ringing leads as follows: the generator G',.the conductor 7 0, the contact 66, the conductor 72, the contact 71, the conductor 65 ringing contacts 63 out on line and returns through cord of which operator has thrown the key the conductor 62, the contacts 74, the conductor 7 3, the contact 61, and the conductor 75.

The pilot light 45 is connected by the relay 48 through the circuit 85, the same lighting when the operator touches a button and is not extinguished until the selection is started by barrel 10 passing zero. 7

on the line by the manipulation of said switches, said rotary member being adapted when controlling said switches to operate each one according to the sub-statlon select- 69, contact 53 and ed and whereby a predetermined number of impulses are delivered to the line, manually controlled means for initially selecting one of the switches, electrically controlled means set i in operation by the manually controlled means for continuing the operation after the 1nanually control-led means is released, electrically controlled means for automatically opening the switches after, a predetermined number of impulses have been transmitted to the line, a sourcect energy at the exchange for operating a call-up alarm, means controlled by the rotary-memberat the end of the operation thereof for connecting said source to the line at the instant :the called sub-station has been selected, and a signal device at the exchange for indicating the normal operation of the exchange.

2. In a selective system of telephony, the

combination in a party line telephone otan substationsall being connected in the same circult, a selecting member at the exchange,

a key ,at the exchange, said hey being adapted to be momentarily vdepressed for producing the initial operation ot the selecting member, automatic means set in operat on thereby to continue-the selecting operation until the called substation is connected to the exchange, and the uncalled substations are shunted from the circuit.

at. In a selective system of telephony, the combination in a party line telephone of an exchange and a plurality of substations, said substations all being connected in the same circuit, a selecting member at the exchan e, a key at the exchange, said key being adapted to be momentarily depressed for producing the initial operation of the selecting member, automatic means set in operation thereby to continue the selecting operation until the called substation is connected to the exchange, a call-up alarm in each substation, and means set in operation thereby for automatically operating the call-upalarm in the called substation.

5. In a selective system of telephony for party line telephones, the combination of an exchange and a plurality of sub-stations serially connected for the electrical trans missioii of intelligence, a lock-out device in each substation, a selecting member at the exchange, a key at the exchange the pee stations are locked out.

exchange-and a plurality of sub-stations serially connected for the electrical trans mission of intelligence, a locleout 'devicein each sub-station, a selecting member at the exchange, a key at the exchange tor-produci-ng an initial operation of the selecting member, and means set in operation thereby to automatically continuethe selecting op ,eration, until the called sub-station is con .nected to the exchange and the uncalled sub; stations are locked o-ut, the call-up alarm in the called sub-station being actuated alter the selecting operation. -1

7. In a selective system or" telephony for party line telephones, the combination of an exchange and a plurality otsubkstations serially connected for the electrical transmission of intelligence, a lock-out device in bf telephon it each substation, a rotary selecting member at the exchange, va key at the-exchange for producing an initial operation of the rotary selecting member, and means set in operation thereby to automatically continue the selecting operation until the called sub-stationis connected, to ,the exchange and the uncalled sub-stations are locked out.

8.; In a selective system of telephonytor party lmetelephones, the combinationrofan zexchange and afplurality of subs ations serially connected torthe electrical transmission of intelligence, a lock out deyicerto eachsub-station, a rotary. selecting member .at the exchange, a key at "the exchange for producing an initial operation of the selecting member, and means set in operation thereby to automatically continue the selecting operation until the called sub-station is connected to the exchange and the uncalled sub-stations are locked out, the call-up alarm in the called substation being actuated after the selecting operation.

9. In aselective system of telephony, the combination of an exchange and a plurality of sub-stations connected electrically for the transmission vof intelligence, alock-out device in each substation, a rotary selecting and circuit controlling mechanism at the exchange, a key for closing one circuit thereof at a time, andautomatic means at the exchange primarily set in operation by the key for continuing the selecting operation whereby the look-out devices at the sub-sta 'tions' are continued in operation and the called sub-station is connected to the exchange.

10. In a selective system of telephony,

the combination of exchange an plu ted to the line.

rality of sub-stations connected electrically for the'transmission of intelligence, a lockout device in eachsub-station, a rotary selecting and circuit controlling mechanism at the exchange, a keyfor closing one circuit thereof at a time, and automatic means at the exchange primarily set in operation by rality, of sub-stations connected electrically for thetransmission of intelligence, a rotary member mounted in the exchange, a plurality of switches controlled thereby, one to each sub-station, said rotary member being adapted when controlling said switches to operate each one according to the sub-sta tion selected and whereby through said switches a predetermined number of impulses are delivered to the line, a key for initially selecting one of the switches for producing the impulses, electrically controlled means set in operation by the key for continuing the operation after the key is released, and electrically controlled means for automatically stopping the impulses when a predetermined number have been transmit- 12; In a selective system of telephony, the combination of an exchange and a plurality of sub-stations connected electrically for the transmission of intelligence, a rotary member mounted in the exchange, a plurality of switches controlled thereby, oneto each sub-station, said a rotary member being adapted when controlling said switches to operateeach one according to the sub-station selected and whereby a predetermined number of impulses are delivered to the line, 7

a key for initially selecting one of the i switches for producing the impulses, electrically controlled means set in operation by the'key for continuing the operation after 7 the key is released, electrically controlled means forautomatically stopping the imswitches controlled thereby, one to each s-ub- 7 station, said rotary member being adapted when controlling said switches to operate each one according to the sub-station selected and whereby a predetermined number of impulses are delivered to the line, a key for initially selecting one of the switches for producing the impulses, electrically controlled means set in operation bythe key for continuing the operation after the key isreleased, electrically controlled means for an tomatically stopping the impulses when a predetermined number have been transmitted to the line, a source of energy at the exchange for operatlng a call-up alarm, means controlled by the rotary member at the end of its operation for connecting said source to the line at the instant the called sub-station has been selected, and a signal device at the exchange for indicating the normal operation of the exchange. 5 V

In testnnony whereof I aflix my s gnature.

RUBEN c; M. HASTINGS." 

